Home / 21,391.80-32,087.76-8,741.56

Finding the Fourth Proportional to 21,391.80, 32,087.76 and 8,741.56

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Solution

The fourth proportional to 21,391.80, 32,087.76 and 8,741.56 is: 13,112.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.80 : 32,087.76 = 8,741.56 : x
  2. Step 2: Convert to fraction form
    21,391.80/32,087.76 = 8,741.56/x
  3. Step 3: Cross multiply
    21,391.80x = 32,087.76 × 8,741.56
  4. Step 4: Simplify right side
    21,391.80x = 280,497,057.45
  5. Step 5: Solve for x
    x = 280,497,057.45/21,391.80
  6. Step 6: Final answer
    x = 13,112.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.